title: Electroluminescent properties of an electrochemically cross-linkable carbazole peripheral poly(benzyl ether) dendrimer.
abstract: The electroluminescent (EL) properties of a cross-linkable carbazole-terminated poly(benzyl ether) dendrimer, G(3)-cbz DN, doped into a PVK:PBD host matrix with a double-layer device configuration are investigated. Different concentrations of the guest material can control device efficiency, related to chromaticity of white emission and the origin of excited-state complexes occurring between hole-transporting carbazole units (PVK or G(3)-cbz DN) and electron-transporting oxadiazole (PBD). Two excited states (exciplex and electroplex) generated at the interfaces of PVK/G(3)-cbz DN and PBD result in competitive emission, exhibiting a broad band in the EL spectra.
authors.affiliation: Department of Chemistry, University of Houston, Houston, TX 77204, USA.
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Park
authors.forename: Dong-Eun
authors.initials: DE
authors.lastname: Kim
authors.forename: Ramakrishna
authors.initials: R
authors.lastname: Ponnapati
authors.forename: Jong-Min
authors.initials: JM
authors.lastname: Kim
authors.forename: Young-Soo
authors.initials: YS
authors.lastname: Kwon
authors.forename: Rigoberto C
authors.initials: RC
authors.lastname: Advincula